Home / 3,126.87-4,315.49-1,800.63

Finding the Fourth Proportional to 3,126.87, 4,315.49 and 1,800.63

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Solution

The fourth proportional to 3,126.87, 4,315.49 and 1,800.63 is: 2,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.87 : 4,315.49 = 1,800.63 : x
  2. Step 2: Convert to fraction form
    3,126.87/4,315.49 = 1,800.63/x
  3. Step 3: Cross multiply
    3,126.87x = 4,315.49 × 1,800.63
  4. Step 4: Simplify right side
    3,126.87x = 7,770,600.76
  5. Step 5: Solve for x
    x = 7,770,600.76/3,126.87
  6. Step 6: Final answer
    x = 2,485.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.